Climbing shrub; branches stout, rugose, striate.Leaves 3-jugate, leaflets coriaceous oblong, shortly acuminate, unequally rounded and subauricled on the outer edge at base, smooth and shining above, opaque and ferruginous beneath with prominent midrib and venation; reaching 8 in. in length by 3–3 1/2 in. in breadth. Racemes axillary, branched and paniculate, 6 in. long. Bracts subtending the branches of inflorescence apparently obsolete or caducous, their stipules lanceolate glabrous 1/2– 3/4 in. long. Involucral bracteoles ovate-lanceolate, thickly coriaceous, puberulous. Calyx-lobes 5, subequal, membranous, oblong, acute, glabrous, slightly exceeding the 4 smaller petals. Posterior petal ample, limb 2-lobate, claw long and stout. Fertile stamens 3, exserted, rest gland-like or 0. Ovary shortly stipitate, rusty-villous, 4-ovulate; style slender, glabrous; stigma capitellate. Legume ...(?).
